1. a plugin is a hardware or software module that adds a specific feature or service.
2. WYSI- wordpress because it’s already deactivated.
3. no.
4. they don’t usually work by themselves because they have to depend on their services provided by the host application.
5. the main difference is that plugins generally rely on the host’s application0’s user interface and have a well defined boundary to their possible set of actions .
6. plugins first began on the 1970’s.
7. www.wikipedia.org
